Heat dissipation fan



FIG. 1 is a perspective view of a heat dissipation fan showing a firstembodiment of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof; and

FIG. 7 is a bottom plan view thereof.

FIG. 8 is a perspective view of a heat dissipation fan showing a secondembodiment of my new design;

FIG. 9 is a top plan view of FIG. 8;

FIG. 10 is a right side elevational view of FIG. 8;

FIG. 11 is a front elevational view of FIG. 8;

FIG. 12 is a rear elevational view of FIG. 8;

FIG. 13 is a left side elevational view of FIG. 8; and,

FIG. 14 is a bottom plan view of FIG. 8.

The ornamental design for a heat dissipation fan, as shown anddescribed.